Collection of Science Jokes P2

[DaveC426913]

He said he kept noticing cars swerving at him as they drove by.

Tell me you're not serious!

 

[Ivan Seeking]

Tell me you're not serious!

I'm dead serious. The more the mass of ferrous metal, the greater the force. It probably did. One pulled into a D8 Cat. But I don't know if the MRI or the Cat is what slid.

 

[Ivan Seeking]

However you will not act like a human compass if floating in a pool after getting an MRI. That WAS a joke. :)

 

[Keith_McClary]

The magnet was kept superconductive

What happens if it warms up while driving around?

 

[Ivan Seeking]

What happens if it warms up while driving around?

Eventually it would and then lose the field. I don't remember the max temp but we had to use liquid nitrogen over liquid helium for cooling. Once the nitrogen boiled off it would be dead.

 

[Keith_McClary]

lose the field

I thought that would be catastrophic, but I didn't know about the "alternate circuit":
The magnet is designed with an alternate circuit that can protect it and keep it from burning up. This is where it gets dramatic: The alternate circuit is essentially a heater that dissipates the magnet's stored energy by boiling all the liquid helium in magnet's storage tank. A white cloud of helium comes billowing out of multiple pressure relief ports.
TIL

 

[Ivan Seeking]

I thought that would be catastrophic, but I didn't know about the "alternate circuit":
The magnet is designed with an alternate circuit that can protect it and keep it from burning up. This is where it gets dramatic: The alternate circuit is essentially a heater that dissipates the magnet's stored energy by boiling all the liquid helium in magnet's storage tank. A white cloud of helium comes billowing out of multiple pressure relief ports.
TIL

IIRC we just purged the nitrogen, not the helium. But that was a very long time ago. And I wasn't responsible for that system. So I may not remember all of the details correctly.

Purging the cooling system was a normal part of the procedure for transport. And in the early days, they might hit 2 to 4 hospitals in a day.

 

[Ivan Seeking]

My favorite new quote comes from Young Sheldon: I don't believe in a God but I sure like acting like one!

That's good.

 

[Ivan Seeking]

I'm dead serious. The more the mass of ferrous metal, the greater the force. It probably did. One pulled into a D8 Cat. But I don't know if the MRI or the Cat is what slid.

View attachment 274624

A bit of personal trivia: For anyone who remembers the movie Volcano, the D8 Cat-MRI incident was at Cedars Sinai Medical Center right where the movie scenes took place - right across from the Beverly Center. That same pad was where we put the MRI [not a driven unit but more like a mobile home]. My old MRI was gone. I guess it got wiped out by the volcano. :(

 

[256bits]

He said he kept noticing cars swerving at him as they drove by

What an egocentric guy/gal - no regard for what those bewildered drivers were thinking when their own cars started acting weird pulling to one side.
I wonder how many went to garages complaining about loose steering the next day.

 

[Demystifier]

 

[Stavros Kiri]

It may have mostly been cloudy but festive Earth didn't miss it! ...

Merry Christmas!

 

[Demystifier]

An infinite number of mathematicians walk into a bar. The first asks for a pint of beer. The second asks for half a pint. The third asks for a quarter-pint. The fourth asks for an eighth of a pint.

The bartender interrupts to say, "I'll serve the whole group two pints, and that's your limit!"

An infinite number of mathematicians walk into a bar. The first asks for 1 beer. The second asks for 2 beers. The third asks for 3 beers. The fourth asks for 4 beers. The bartender interrupts to say: "Sorry, but I can't take your order. One beer is one dollar and I don't have a twelfth dollar coin to pay you."

 

[DrClaude]

 

[Keith_McClary]

Astronomy Xmas
from Damn Interesting

 

[BillTre]

 

[sysprog]

@BillTre this bookmarklet wipes the current site's cookies out of your browser (you can save it as a bookmark -- to use it you'll have to change the 'jjavascript' back to 'javascript' -- I put the extra j into get around it being flagged as possibly harmful -- it isn't harmful but it does destroy cookies):

jjavascript:(function(){C=document.cookie.split("; ");for(d="."+location.host;d;d=(""+d).substr(1).match(/\..*$/))for(sl=0;sl<2;++sl)for(p="/"+location.pathname;p;p=p.substring(0,p.lastIndexOf('/')))for(i in C)if(c=C[i]){document.cookie=c+"; domain="+d.slice(sl)+"; path="+p.slice(1)+"/"+"; expires="+new Date((new Date).getTime()-1e11).toGMTString()}})()

 

[Demystifier]

 

[BillTre]

 

[mfb]

I would think "go home" comes even earlier.

 

[BillTre]

Greta Thunburg's birthday shirt.
I like her sense of humor.

 

[BillTre]

 

[BillTre]

 

[davenn]

We all laughed in psychology class at how dumb Pavlov's dog was.
Then the bell rang and we all went to lunch.

 

[Keith_McClary]

Rabbits Against Magic by Jonathan Lemon for January 04, 2021

Lettuce is their psycho niece(?).

 

[mfb]

Dihydrogen monoxide is the main component of acid rain and accidental inhalation causes many deaths, and yet it's completely unregulated. Companies add it to food everywhere with no oversight.
http://www.dhmo.org/facts.html

 

[DrClaude]

Dihydrogen monoxide is the main component of acid rain and accidental inhalation causes many deaths, and yet it's completely unregulated. Companies add it to food everywhere with no oversight.
http://www.dhmo.org/facts.html

How cares about acid rain anymore? More importantly, dihydrogen monoxide was found in all those who got covid-19!

 

[davenn]

I wonder what the value of this inductor is ??

 

[davenn]

 

[phinds]

View attachment 275663

Pretty cool. I've used breadboards but this is my first encounter w/ a crackerboard.

 

[Vanadium 50]

this is my first encounter w/ a crackerboard

I believe it is what they call a breadboard.

 

[BillTre]

 

[fresh_42]

View attachment 275920

The problem is, that there is still a 'D' in the model for quite some time:

Vaccinating roundabout 4 billion people (twice) ...

 

[Keith_McClary]

SMBC

 

[Keith_McClary]

Rabbits Against Magic by Jonathan Lemon for January 10, 2021